voiceblue 10 months ago

Can you explain? How are they able to check whether someone did a quick “in and out” keylogger or cookie extraction? I doubt they can, because I doubt they store every request (that would go against what they claim for privacy) and I also doubt their DB backup happens on such a high frequency that they could catch this (e.g. minute-to-minute).

So…how? Are you claiming they have oodles of logs and a perfect dork* to find suspicious JavaScript? If they had the latter wouldn’t they already be using it for security?

If you have some method that works do tell.

* https://www.alibabacloud.com/blog/what-is-dork_600025

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  • Cpoll 10 months ago

    I don't think you're using "dorking" correctly here, since web crawlers aren't anywhere in the picture. Server log queries aren't "dorks." Besides, if you can reproduce the issue and _if_ it's somehow logged in the database, it's usually not too hard to figure out how to query for other occurrences.

    With that said, I think you're probably right. I doubt Firebase audit logs contain update contents, and based on the bug report, your "in and out" proposal is as simple as:

    firebase.collection("boosts").where("creatorID", "==", "attackers_user_id").update({"creatorId": "victims_user_id" });

    sleep(time);

    firebase.collection("boosts").where("creatorID", "==", "victims_user_id").update({"creatorId": "attackers_user_id" });

    (okay, not exactly, because this would also set the ownership of the victim's legitimate Boosts, but the actual code isn't much more difficult).

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